A nurse is reinforcing teaching with a parent of an infant who has a prescription for amoxicillin 100 mg PO every 8 hr. Available is amoxicillin suspension 200 mg/5 mL. The nurse should tell the parent to administer how many tsp per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Determine the desired dosage: The nurse needs to administer 100 mg of amoxicillin. Determine the volume per dose: The amoxicillin suspension contains 200 mg per 5 mL. The nurse needs to administer 100 mg per dose. To find the volume per dose: 200 mg / 5 mL = 100 mg / x mL Cross-multiplying gives us: 200x = 500 Dividing both sides by 200, we get: x = 2.5 mL Convert mL to tsp: There are approximately 5 mL in 1 teaspoon (tsp). So, 2.5 mL is equal to 2.5 mL / 5 mL/tsp = 0.5 tsp.